Apparatus for aerating flour.



AVAILABLE CIOPY W. M. Nl-SSLEY. APPARATUS FOR AER T'ING iLoumAPPLICATION mm ocT. 1.19|3.

' L Patented Apr. 6, 1915.

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APPARATUS .FOR AERATING FLOUR.

Patented "A r. 6, 1915 APPLICATION FILED OCT- I9I3.

I f J Z 7% To aZZ whom-jit may concern WILLIAJVLMQNISSLEY, orPHILADELPHIA, rnnnsYLvANm;

#PIAB'ATUS asteame! B *tknownthat I, VILLIAM en ofthe United- States,residing in iljl illa'delphia, Pennsylvania',"- 'have invented rta'in';-Improvements in Apparatus for iierating'Flour, of which the followingis a specification.

One object of my invention is to provide a novel method for causingflour to mechani'-' callyj'take up or, absorb relatively large amountsof. air and at the same time. be evened andr'blended' with the utmostuniformity; the invention also contemplating a novel form of apparatusforcarrying out this method of treatment.

I further desire to provide a relatively simple, compact-and eflicientdevice for aerating-"flour, whereby the latter is caused to repe tedlycome into intimate association W1th;,currents orvbodies of air, and isacted on mechanically to cause it toabsorb relatively large quantitiesof the same.

- Thes'e;;objects= andother advantageousends ecure as hereinafter setforth, reference' be n d to'the accompanying drawings, in'wih sideelevation partly in Figure 1 "illustrating a machine converticalsection,-

- structed-according to my invention and designed to carry out my methodof treatment; Fig. 2' is a plan of the machine shown in Fig. 1, and Fig.3 is a transverse vertical section on the line a-a, Fig. 2.

In the above drawings 1 represents an elongated casing whose uppervportion is substantially rectangular in section but whose bottom has ahopper-like form indicated at 2 in so that it terminates-in an elongatedtrough 3' containing a screw conveyer 4', The casing and the others ofthe above mentioned parts are carried on supporting legs 5 and thespindle 6 of the conveyer is supported in suitable bearings as shown inv. 'Fig, 1,

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having fixed to one end a sprocket Wheel 7. I

Extending longitudinally within the easwhich is fixed a reel 9 of ahexagonal section covered with a suitable bolting cloth. One end of thisreel extends. into and is open within a relatively narrow chamber 10formed by a. vertical partition 11 within the casing 1 adjacent one endthereof, and this chamber opens at the bottom into discharge spouts 10At its opposite end the reel 9 isconcentrically en- SpecificationolfIt'e'tters Patent.

length of screw conveyer 13 fixed to said feeding trrlgh, has fixed toit a sprocket wheel 3% connected through a sprocket chain 15 with thesprocket wheel 7 on the convever shaft 6. The'reel shaft-8 at that endopposite the sprocket whe'el li, has fixed to it a drlvlng pulley 16connected through a belt 17 w1th a pulley 18 on a counter shaft 19 drven fromka suitable source of power, and this latter shaft is shown, inthe present instance, as mounted in bearings'QO carried on the topof'the casingIl. Connected to the counter shaft 19 by a gear 21 andapinion 22 is the driving shaft of a fan 23, whose intake, through aconduit 24, is connected with that part of the space below the reelimmediately adjacent the chamber 10, while its outlet, through a pipe25, is connected to discharge tangentially into the cylindrical upperpart 26 of a separator 27. This upper portlon communicates through adownwardly tapering part 28, Withthe conveyer trough 3.

From the separator 27 a pipe 29 extends to the lower portion of thecasing 1 at that end thereof adjacent the supply conveyer 13, and thispipe is providedwith two branches, having dampers 30 and 31 wherebygreater or less quantities of air may be admitted to the closed aircircuit made up by the air conduits and the casing. This pipe enters thetop of the separator 27 and has a downwardly expanding portion 32 shownin dotted lines in Fig. l, which terminates in a plane substantiallycoincident with the bottom of the cylindrical portion 26.

Vith this power is applied to the shaft 19,-thus driving the fan turningthe reel9 and at the same time operating the conveyers 13 and 4:. Theflour to be aerated is then fed into trough 12, so that i-tis carried bythe conveyer 13 into the reel, where it is rapidly and more or lessviolently agitated, partly by the revolution of said reel and partly bythe air current, which being delivered from the fan through the pipe 25,separator26 and pipe enters said reel through the clothcovering thereof.A certainpart of the flour in a highly aerated condition sifts PatentedA r.-.e-;.1a15. Application filed October 7,1913. 'seria11vo.793,ssa

' tered b a tron h 12 cont l- I M. y g wining a siort construct-ion ofapparatus opening 83. Any large particles or hint-p3 are deliveredthrough the open end of the reel (which has a slight downward lnchnetiontoward said end) into the chamber 10,

and'faiis from said chamber into the spouts 10 which may deliver to anysuitable re ceptecle. Still another pert of the flour is carried intopipe 24, through the fen 23 and the pipe 25, into the upper part of theseparator 27; Where it is given e whirling motion and finally allowedto'settie as'the air enters and expands therein. Alerge portion of theflour thus entering falls through they by the air current therein to thefront end of the casing 1 being delivered. horizonteil y' y fromthe'plpe into thehopper part 2 oi said casing and directed thereby intoconveyor trough 3.

All thev above noted. portions of the flour treated are brought into themost intimate contact with. large bodies of air, so that theirabsorption of the same and their con 56(111fi1ltfi1010UQi'1 aeration isinsured. Any desired receptacle may be pieced to receive the aeratedfiourdischerged fromxthe open ing'33 and under operating conditions thevelocity of the air currents in the different parts of the apparatus,as. Well as the open 3P1 sips? oi sir admitted, ;.my be convenientiyadjusted by means of the dampers 30 end '31:.

pnretus posser'ses in a high degree all the advantages arising from).complete aeration the bread, oonfeetionery, etc, made there from beingextremely light asweiias of reietiveiy izirge voitnne for a givenWeight; it being noted that such, baked products are of the purestwhiteness. Moreover, my method of treatment results in the most.complete and uniform evening and blending of the various particles ofwhich the flour is composed Without the formation of so-oeiled dust.

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A flour aerating machine inclndinge cas- I have found that flour treatedby my amp I ing; a conve'yer for removing; flour from the bottomthereof; a reel in said casing; 21 fan having its intake connected tothe lower part of one end 01. the eesin's 'g' a sepemtoreoe nested tothe outlet oi id ten and dis charging solidmsterisi' to the-conveyor?with an air conduit connecting the separator directly to the lower partof thesecond-end of the casing.

y In testimony whereof, I have signed my. name to ti snecitieation, inthe presence of wine witnesses,

WILLIAM M. NissLEY.

Witnesses WILLIAM E. BRADLEY, W313 BARR. A

